/*
 * Copyright (C) 2023, KylinSoft Co., Ltd.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
#include "picturetowhite.h"

PictureToWhite::PictureToWhite(QObject *parent) : QObject(parent)
{
    initGsettingValue();
}

void PictureToWhite::initGsettingValue()
{
    const QByteArray id(ORG_UKUI_STYLE);
    QStringList stylelist;
    stylelist << STYLE_NAME_KEY_DARK << STYLE_NAME_KEY_LIGHT << STYLE_NAME_KEY_DEFAULT;
    if (QGSettings::isSchemaInstalled(id)) {
        m_pgsettings = new QGSettings(id);
        if (stylelist.contains(m_pgsettings->get(STYLE_NAME).toString()) && m_pgsettings->get(STYLE_NAME).toString() == STYLE_NAME_KEY_LIGHT)
            tray_icon_color = TRAY_ICON_COLOR_LOGHT;
        else
            tray_icon_color = TRAY_ICON_COLOR_DRAK;
    }
    connect(m_pgsettings, &QGSettings::changed, this, [=] (const QString &key) {
        if (key==STYLE_NAME) {
            if (stylelist.contains(m_pgsettings->get(STYLE_NAME).toString()) && m_pgsettings->get(STYLE_NAME).toString() == STYLE_NAME_KEY_LIGHT)
                tray_icon_color = TRAY_ICON_COLOR_LOGHT;
            else
                tray_icon_color = TRAY_ICON_COLOR_DRAK;

        }
    });
}

QPixmap PictureToWhite::drawSymbolicColoredPixmap(const QPixmap &source)
{
    QColor gray(128,128,128);
    QColor standard (31,32,34);
    QImage img = source.toImage();
    for (int x = 0; x < img.width(); x++) {
        for (int y = 0; y < img.height(); y++) {
            auto color = img.pixelColor(x, y);
            if (color.alpha() > 0) {
                if (qAbs(color.red()-gray.red()) < 255 && qAbs(color.green()-gray.green()) < 255 && qAbs(color.blue()-gray.blue()) < 255) {
                    color.setRed(tray_icon_color);
                    color.setGreen(tray_icon_color);
                    color.setBlue(tray_icon_color);
                    img.setPixelColor(x, y, color);
                } else if (qAbs(color.red()-standard.red()) < 255 && qAbs(color.green()-standard.green()) < 255 && qAbs(color.blue()-standard.blue()) < 255) {
                    color.setRed(tray_icon_color);
                    color.setGreen(tray_icon_color);
                    color.setBlue(tray_icon_color);
                    img.setPixelColor(x, y, color);
                } else
                    img.setPixelColor(x, y, color);
            }
        }
    }
    return QPixmap::fromImage(img);
}
